疲惫: beaten, exhausted, tired...
显示: to show, to illustrate, to display, to demonstrate...
造纸术: papermaking technology...
作业: school assignment, homework, work, task, operation, to operate...
完美: perfect, perfection, perfectly...
秋季: autumn, fall...
不耐烦: impatient, to lose patience...
就: at once, then, right away, only, (emphasis), to approach, to move towards, to undertake...
界线: limits, bounds, dividing line...
当今: current, present, now, nowadays...
